61. Hamburger Meat A supermarket prepares its

“1-pound” packages of ground beef so that there will be a variety of weights, some slightly more and some slightly less than 1 pound. Suppose that the weights of these “1-pound” packages are normally distributed with a mean of 1.00 pound and a standard deviation of

.15 pound.

a. What proportion of the packages will weigh more than 1 pound?

b. What proportion of the packages will weigh between

.95 and 1.05 pounds?

c. What is the probability that a randomly selected package of ground beef will weigh less than

.80 pound?

d. Would it be unusual to find a package of ground beef that weighs 1.45 pounds? How would you explain such a large package?